package com.zlcode.order.service;

import com.zlcode.order.mapper.OrderMapper;
import com.zlcode.order.model.OrderInfo;
import com.zlcode.order.model.ProductInfo;
import jakarta.annotation.PostConstruct;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

@Service
@Slf4j
public class OrderService {
    @Autowired
    private OrderMapper orderMapper;

    @Autowired
    private RestTemplate restTemplate;

    @Autowired
    private DiscoveryClient discoveryClient;

    private AtomicInteger count = new AtomicInteger(0);

    private List<ServiceInstance> instances;

    @PostConstruct
    public void init() {
        // 从 Eureka 中获取服务列表
        instances = discoveryClient.getInstances("product-service");
    }

    public OrderInfo selectOrderById(Integer orderId) {
        OrderInfo orderInfo = orderMapper.selectOrderById(orderId);
//        String url = "http://127.0.0.1:9090/product/" + orderInfo.getProductId();
        // 从 Eureka 中获取服务列表
        List<ServiceInstance> instances = discoveryClient.getInstances("product-service");
        String uri = instances.get(0).getUri().toString(); // 对应 ip + 端口号
        String url = uri + "/product/" + orderInfo.getProductId();
        log.info("远程调用url: {}", url);
        ProductInfo productInfo = restTemplate.getForObject(url, ProductInfo.class);
        orderInfo.setProductInfo(productInfo);
        return orderInfo;
    }

    /*public OrderInfo selectOrderById(Integer orderId) {
        OrderInfo orderInfo = orderMapper.selectOrderById(orderId);

        int index = count.getAndIncrement() % instances.size();
        String uri = instances.get(index).getUri().toString(); // 对应 ip + 端口号
        String url = uri + "/product/" + orderInfo.getProductId();
        log.info("远程调用url: {}", url);
        ProductInfo productInfo = restTemplate.getForObject(url, ProductInfo.class);
        orderInfo.setProductInfo(productInfo);
        return orderInfo;
    }*/


    /*public OrderInfo selectOrderById(Integer orderId) {
        OrderInfo orderInfo = orderMapper.selectOrderById(orderId);
        String url = "http://product-service/product/" + orderInfo.getProductId();
        log.info("远程调用url: {}", url);
        ProductInfo productInfo = restTemplate.getForObject(url, ProductInfo.class);
        orderInfo.setProductInfo(productInfo);
        return orderInfo;
    }*/
}
